CC: [email protected]
TO: Steven Barrett <[email protected]>

Hi Steven,

First bad commit (maybe != root cause):

tree:   https://github.com/zen-kernel/zen-kernel 5.10/muqss
head:   5e029bcb673aa73c2a432f5f78f60351821f5b33
commit: e219172bbe43aed68943e72b19897191b6bd8f8f [14/21] muqss: Fix build error 
on config leak
:::::: branch date: 9 hours ago
:::::: commit date: 9 hours ago
config: ia64-randconfig-s032-20201228 (attached as .config)
compiler: ia64-linux-gcc (GCC) 9.3.0
reproduce:
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-184-g1b896707-dirty
        # 
https://github.com/zen-kernel/zen-kernel/commit/e219172bbe43aed68943e72b19897191b6bd8f8f
        git remote add zen-kernel-zen-kernel 
https://github.com/zen-kernel/zen-kernel
        git fetch --no-tags zen-kernel-zen-kernel 5.10/muqss
        git checkout e219172bbe43aed68943e72b19897191b6bd8f8f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 
CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=ia64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>


"sparse warnings: (new ones prefixed by >>)"
   kernel/sched/cpufreq.c:12:1: sparse: sparse: symbol 
'cpufreq_update_util_data' redeclared with different type (different address 
spaces):
>> kernel/sched/cpufreq.c:12:1: sparse:    struct update_util_data [noderef] 
>> __rcu *[addressable] [noderef] [toplevel] __percpu cpufreq_update_util_data
   kernel/sched/cpufreq.c: note: in included file (through 
kernel/sched/sched.h):
   kernel/sched/MuQSS.h:793:1: sparse: note: previously declared as:
>> kernel/sched/MuQSS.h:793:1: sparse:    struct update_util_data *extern 
>> [addressable] [noderef] [toplevel] __percpu cpufreq_update_util_data
--
   kernel/sched/topology.c:617:49: sparse: sparse: incorrect type in 
initializer (different address spaces) @@     expected struct sched_domain 
*parent @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:617:49: sparse:     expected struct sched_domain 
*parent
   kernel/sched/topology.c:617:49: sparse:     got struct sched_domain 
[noderef] __rcu *parent
   kernel/sched/topology.c:638:1: sparse: sparse: symbol 'sd_llc' redeclared 
with different type (different address spaces):
>> kernel/sched/topology.c:638:1: sparse:    struct sched_domain [noderef] 
>> __rcu *[addressable] [noderef] [toplevel] __percpu sd_llc
   kernel/sched/topology.c: note: in included file (through 
kernel/sched/sched.h):
   kernel/sched/MuQSS.h:608:1: sparse: note: previously declared as:
>> kernel/sched/MuQSS.h:608:1: sparse:    struct sched_domain *extern 
>> [addressable] [noderef] [toplevel] __percpu sd_llc
   kernel/sched/topology.c:641:1: sparse: sparse: symbol 'sd_llc_shared' 
redeclared with different type (different address spaces):
>> kernel/sched/topology.c:641:1: sparse:    struct sched_domain_shared 
>> [noderef] __rcu *[addressable] [noderef] [toplevel] __percpu sd_llc_shared
   kernel/sched/MuQSS.h:611:1: sparse: note: previously declared as:
>> kernel/sched/MuQSS.h:611:1: sparse:    struct sched_domain_shared *extern 
>> [addressable] [noderef] [toplevel] __percpu sd_llc_shared
   kernel/sched/topology.c:642:1: sparse: sparse: symbol 'sd_numa' redeclared 
with different type (different address spaces):
>> kernel/sched/topology.c:642:1: sparse:    struct sched_domain [noderef] 
>> __rcu *[addressable] [noderef] [toplevel] __percpu sd_numa
   kernel/sched/MuQSS.h:612:1: sparse: note: previously declared as:
>> kernel/sched/MuQSS.h:612:1: sparse:    struct sched_domain *extern 
>> [addressable] [noderef] [toplevel] __percpu sd_numa
   kernel/sched/topology.c:643:1: sparse: sparse: symbol 'sd_asym_packing' 
redeclared with different type (different address spaces):
>> kernel/sched/topology.c:643:1: sparse:    struct sched_domain [noderef] 
>> __rcu *[addressable] [noderef] [toplevel] __percpu sd_asym_packing
   kernel/sched/MuQSS.h:613:1: sparse: note: previously declared as:
>> kernel/sched/MuQSS.h:613:1: sparse:    struct sched_domain *extern 
>> [addressable] [noderef] [toplevel] __percpu sd_asym_packing
   kernel/sched/topology.c:644:1: sparse: sparse: symbol 'sd_asym_cpucapacity' 
redeclared with different type (different address spaces):
>> kernel/sched/topology.c:644:1: sparse:    struct sched_domain [noderef] 
>> __rcu *[addressable] [noderef] [toplevel] __percpu sd_asym_cpucapacity
   kernel/sched/MuQSS.h:614:1: sparse: note: previously declared as:
>> kernel/sched/MuQSS.h:614:1: sparse:    struct sched_domain *extern 
>> [addressable] [noderef] [toplevel] __percpu sd_asym_cpucapacity
   kernel/sched/topology.c:688:50: sparse: sparse: incorrect type in 
initializer (different address spaces) @@     expected struct sched_domain 
*parent @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:688:50: sparse:     expected struct sched_domain 
*parent
   kernel/sched/topology.c:688:50: sparse:     got struct sched_domain 
[noderef] __rcu *parent
   kernel/sched/topology.c:695:55: sparse: sparse: incorrect type in assignment 
(different address spaces) @@     expected struct sched_domain [noderef] __rcu 
*[noderef] __rcu child @@     got struct sched_domain *[assigned] tmp @@
   kernel/sched/topology.c:695:55: sparse:     expected struct sched_domain 
[noderef] __rcu *[noderef] __rcu child
   kernel/sched/topology.c:695:55: sparse:     got struct sched_domain 
*[assigned] tmp
   kernel/sched/topology.c:705:29: sparse: sparse: incorrect type in assignment 
(different address spaces) @@     expected struct sched_domain *[assigned] tmp 
@@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:705:29: sparse:     expected struct sched_domain 
*[assigned] tmp
   kernel/sched/topology.c:705:29: sparse:     got struct sched_domain 
[noderef] __rcu *parent
   kernel/sched/topology.c:710:20: sparse: sparse: incorrect type in assignment 
(different address spaces) @@     expected struct sched_domain *sd @@     got 
struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:710:20: sparse:     expected struct sched_domain *sd
   kernel/sched/topology.c:710:20: sparse:     got struct sched_domain 
[noderef] __rcu *parent
   kernel/sched/topology.c:720:9: sparse: sparse: incompatible types in 
comparison expression (different address spaces):
>> kernel/sched/topology.c:720:9: sparse:    struct sched_domain [noderef] 
>> __rcu *
   kernel/sched/topology.c:720:9: sparse:    struct sched_domain *
   kernel/sched/topology.c:881:70: sparse: sparse: incorrect type in argument 1 
(different address spaces) @@     expected struct sched_domain *sd @@     got 
struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:910:59: sparse: sparse: incorrect type in argument 1 
(different address spaces) @@     expected struct sched_domain *sd @@     got 
struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:1080:40: sparse: sparse: incorrect type in 
initializer (different address spaces) @@     expected struct sched_domain 
*child @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:1381:43: sparse: sparse: incorrect type in 
initializer (different address spaces) @@     expected struct sched_domain 
[noderef] __rcu *child @@     got struct sched_domain *child @@
   kernel/sched/topology.c:1869:31: sparse: sparse: incorrect type in 
assignment (different address spaces) @@     expected struct sched_domain 
[noderef] __rcu *parent @@     got struct sched_domain *sd @@
   kernel/sched/topology.c:2037:57: sparse: sparse: incorrect type in 
assignment (different address spaces) @@     expected struct sched_domain 
*[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:2054:57: sparse: sparse: incorrect type in 
assignment (different address spaces) @@     expected struct sched_domain 
*[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
>> kernel/sched/MuQSS.h:587:9: sparse: sparse: incompatible types in comparison 
>> expression (different address spaces):
>> kernel/sched/MuQSS.h:587:9: sparse:    struct sched_domain [noderef] __rcu *
>> kernel/sched/MuQSS.h:587:9: sparse:    struct sched_domain *
   kernel/sched/MuQSS.h:600:9: sparse: sparse: incompatible types in comparison 
expression (different address spaces):
   kernel/sched/MuQSS.h:600:9: sparse:    struct sched_domain [noderef] __rcu *
   kernel/sched/MuQSS.h:600:9: sparse:    struct sched_domain *
>> kernel/sched/MuQSS.h:587:9: sparse: sparse: incompatible types in comparison 
>> expression (different address spaces):
>> kernel/sched/MuQSS.h:587:9: sparse:    struct sched_domain [noderef] __rcu *
>> kernel/sched/MuQSS.h:587:9: sparse:    struct sched_domain *
   kernel/sched/MuQSS.h:600:9: sparse: sparse: incompatible types in comparison 
expression (different address spaces):
   kernel/sched/MuQSS.h:600:9: sparse:    struct sched_domain [noderef] __rcu *
   kernel/sched/MuQSS.h:600:9: sparse:    struct sched_domain *

vim +12 kernel/sched/cpufreq.c

adaf9fcd136970e Rafael J. Wysocki       2016-03-10  11  
b10abd0a8859493 Joel Fernandes (Google  2019-03-20 @12) DEFINE_PER_CPU(struct 
update_util_data __rcu *, cpufreq_update_util_data);
adaf9fcd136970e Rafael J. Wysocki       2016-03-10  13  

:::::: The code at line 12 was first introduced by commit
:::::: b10abd0a8859493a93c6b8020f2be2587557749d sched/cpufreq: Annotate 
cpufreq_update_util_data pointer with __rcu

:::::: TO: Joel Fernandes (Google) <[email protected]>
:::::: CC: Ingo Molnar <[email protected]>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

Attachment: .config.gz
Description: application/gzip

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